CN211599152U

CN211599152U - Residual oil recovery device and test system

Info

Publication number: CN211599152U
Application number: CN201922325300.8U
Authority: CN
Inventors: 杨飞; 王晓虎; 徐翊杰; 谢欣武; 盛积成; 崔凯
Original assignee: Weichai Power Co Ltd; Linde Hydraulics China Co Ltd
Current assignee: Weichai Power Co Ltd; Linde Hydraulics China Co Ltd
Priority date: 2019-12-19
Filing date: 2019-12-19
Publication date: 2020-09-29
Anticipated expiration: 2029-12-19

Abstract

The utility model belongs to the engine correlation field discloses a residual oil recovery unit, connects in the casing, the casing includes import and export, residual oil recovery unit includes: the first switch valve is communicated with the inlet; the oil-gas separation component is communicated with the first switch valve; the vacuum generation assembly comprises a vacuum generation pipeline and a throttling element arranged on the vacuum generation pipeline, the throttling element is communicated with the oil-gas separation assembly, and the throttling element is configured to generate negative pressure so that residual oil in the shell is adsorbed to the oil-gas separation assembly. The utility model discloses a throttling element produces the negative pressure for residual oil in the casing is adsorbed to oil and gas separator, separates the air of sneaking into in the residual oil through the oil-gas separation subassembly afterwards, in order to reach the recovery purpose of residual oil, and the high-efficient recovery of residual oil can be realized to above-mentioned device, and the cost is lower.

Description

Residual oil recovery device and test system

Technical Field

The utility model relates to an engine correlation field especially relates to a residual oil recovery unit and test system.

Background

After the test is performed on the hydraulic pump and the motor, oil liquid remains in the casings of the pump and the motor, or after the test is performed on the engine and the gearbox, oil liquid remains in the casings of the engine and the gearbox. After the test is finished, the part of the residual oil needs to be recycled.

The existing residual oil recovery scheme mainly comprises the following two schemes:

1. the scheme has the problems that a complete gear pump driving system is added, the cost is high, the recovery efficiency is low due to the limitation of the self-absorption performance of the gear pump, and the cavitation failure of a gear pump rotor is easy to occur due to the fact that the oil suction port of the oil suction gear pump is in a negative pressure state;

2. the adoption is connected compressed air to survey pump/motor U hydraulic fluid port, and the L mouth connects the oil tank oil return, blows the oil return case back with the residual oil, realizes the residual oil and retrieves, and this scheme exists because pressure gas leads to hydraulic oil to sneak into a large amount of bubbles with the casing residual oil mixture, and hydraulic oil can not normal use, needs one set of special fire fighting equipment, the higher problem of cost.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a residual oil recovery unit and test system, the residual oil in the recovery casing that can be high-efficient quick, and the cost is lower.

To achieve the purpose, the utility model adopts the following technical proposal:

a residual oil recovering device connected to a casing, the casing including an inlet and an outlet, the residual oil recovering device comprising:

the first switch valve is communicated with the inlet;

the oil-gas separation component is communicated with the first switch valve;

the vacuum generation assembly comprises a vacuum generation pipeline and a throttling element arranged on the vacuum generation pipeline, the throttling element is communicated with the oil-gas separation assembly, and the throttling element is configured to generate negative pressure so that residual oil in the shell is adsorbed to the oil-gas separation assembly.

Preferably, the vacuum generating assembly further comprises a second switching valve disposed on the vacuum generating line upstream of the throttling element.

Preferably, the vacuum generating assembly further comprises a separator disposed on the vacuum generating conduit downstream of the restriction element.

Preferably, the vacuum generating assembly further comprises a muffler disposed on the vacuum generating line downstream of the separator.

Preferably, a filter is arranged in the oil-gas separation module.

Preferably, the oil-gas separation component is communicated with an oil tank, and a third switch valve is further arranged between the oil-gas separation component and the oil tank.

The utility model also provides a test system, including foretell residual oil recovery unit, residual oil recovery unit communicate in treat the casing of test piece.

Preferably, the oil-filling device further comprises an oil-filling assembly, wherein the oil-filling assembly comprises an oil pump communicated with the oil tank and a first reversing valve communicated with the oil pump, and the first reversing valve can be communicated with the inlet of the shell and the oil tank.

Preferably, the oil path switching assembly comprises a three-way valve, a first end of the three-way valve is communicated with the outlet of the shell, a second end of the three-way valve is communicated with the oil tank, and a third end of the three-way valve is communicated with the outside atmosphere.

Preferably, the oil path switching assembly further includes a pneumatic reversing valve, the pneumatic reversing valve is configured to communicate the first end with the second end when the oil filling assembly fills oil, and communicate the first end with the third end when the vacuum generating assembly is started.

The utility model has the advantages that:

the utility model discloses a residual oil recovery unit produces the negative pressure through throttling element for residual oil in the casing is adsorbed to oil and gas separator, separates the air of sneaking into in the residual oil through the oil-gas separation subassembly afterwards, with the recovery purpose that reaches the residual oil, and the high-efficient of residual oil is retrieved can be realized to above-mentioned device, and the cost is lower.

The utility model discloses a test system can effectively realize treating the recovery of the interior residual oil of casing of test piece, and recovery efficiency is higher, and the cost is lower.

Drawings

Fig. 1 is a schematic diagram of the residual oil recovering device of the present invention.

In the figure:

1. a first on-off valve; 2. an oil-gas separation assembly; 21. a filter; 22. a pressure gauge; 3. a vacuum generating assembly; 31. a vacuum generating line; 32. a throttling element; 33. a second on-off valve; 34. a separator; 35. a muffler; 4. a third on-off valve; 5. an oil tank; 6. a high pressure gas source; 10. a residual oil recovery unit; 20. a housing; 201. an inlet; 202. an outlet; 30. an oil-filled assembly; 301. an oil pump; 302. a first direction changing valve; 40. an oil path switching assembly; 401. a three-way valve; 402. a pneumatic directional control valve; 403. a flow meter; 50. and (5) a test bench.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.

In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.

In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.

In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.

The utility model provides a residual oil recovery device 10, it can be applied to after pump, motor test, retrieves the residual oil in its casing 20. The method can also be applied to recovering residual oil in the shell 20 after testing tests of an engine, a gearbox and the like are finished. The present embodiment will explain the residual oil recovering device 10 of the present embodiment by taking the residual oil recovery in the pump casing 20 as an example.

As shown in fig. 1, the residual oil recovering device 10 of the present embodiment is connected to a casing 20 of the pump, and the casing 20 is provided with an inlet 201 and an outlet 202. The residual oil recovery device 10 comprises a first switch valve 1, an oil-gas separation component 2 and a vacuum generation component 3, wherein the first switch valve 1 is communicated with an inlet 201 of a shell 20 through a pipeline, the oil-gas separation component 2 is provided with three passages, the first passage is communicated with the first switch valve 1 and is controlled by the first switch valve 1 to be switched on or off with the inlet 201, the second passage is communicated with an oil tank 5 and is used for conveying oil after oil-gas separation to the oil tank 5, and the third passage is communicated with the vacuum generation component 3. Above-mentioned vacuum generation subassembly 3 can produce the negative pressure to make the residual oil in the casing 20 flow into oil-gas separation subassembly 2 through import 201, first ooff valve 1 through the negative pressure, after being followed by oil-gas separation subassembly 2 to the residual oil-gas separation, fluid flows into oil tank 5, and gas then is adsorbed and is discharged by vacuum generation subassembly 3. The above-mentioned oil-gas separation subassembly 2 of this embodiment is common structure among the prior art, and it utilizes gravity separation principle can effectively separate the residual oil and the air of sneaking into, and residual oil recovery efficiency is higher.

In this embodiment, the oil-gas separation assembly 2 is provided with an upper chamber and a lower chamber, wherein the upper chamber is used for gas circulation, and the lower chamber is used for temporary storage of oil. The filter 21 is arranged in the oil-gas separation component 2, the filter 21 is preferably arranged between the upper chamber and the lower chamber of the oil-gas separation component 2, and the oil can be effectively prevented from overflowing to the vacuum generation component 3 and finally overflowing to the outside atmosphere by arranging the filter 21. And a third switch valve 4 is also arranged between the oil-gas separation component 2 and the oil tank 5, and the third switch valve 4 is used for controlling the on-off between the oil-gas separation component 2 and the oil tank 5.

Further, a pressure gauge 22 is arranged on the oil-gas separation assembly 2, and the pressure inside the oil-gas separation assembly 2 is detected through the pressure gauge 22 so as to determine whether to open the third on-off valve 4 according to the internal pressure thereof to convey residual oil.

The vacuum generating assembly 3 comprises a vacuum generating pipeline 31, a second switch valve 33, a throttling element 32, a separator 34 and a silencer 35 which are arranged on the vacuum generating pipeline 31 in sequence along the air inlet direction, wherein:

one end of the vacuum generation pipeline 31 is communicated with a high-pressure air source 6 (which can be a compressor), and compressed air can be conveyed into the vacuum generation pipeline 31 through the high-pressure air source 6.

The throttling element 32 is communicated with the third passage of the oil-gas separation assembly 2, and the throttling element 32 can generate negative pressure so that residual oil in the shell 20 is adsorbed to the oil-gas separation assembly 2. Preferably, the throttling element 32 may be a venturi tube, and the oil-gas separation assembly 2 is communicated with the throat of the venturi tube, and by means of the venturi tube, on one hand, negative pressure can be generated by the venturi effect, the principle is simple, the blockage is not easy to happen, and on the other hand, the cost is lower.

The second on-off valve 33 is provided between the high-pressure gas source 6 and the throttling element 32, and enables control of the delivery of the compressed gas. The separator 34 is disposed downstream of the throttling element 32 and is used for separating air from water flowing therethrough to dry the flowing air. The muffler 35 is provided downstream of the separator 34, and exhaust noise can be reduced by providing the muffler 35.

When the residual oil recovery device 10 of the embodiment recovers residual oil, first the first switch valve 1 and the second switch valve 33 are opened, the third switch valve 4 is closed, then compressed air is supplied into the throttling element 32 through the high-pressure air source 6, so that negative pressure is generated at the throttling element 32, the negative pressure enables residual oil in the shell 20 to flow into the oil-gas separation assembly 2 through the inlet 201 and the first switch valve 1, after oil-gas separation of the oil-gas separation assembly 2, the third switch valve 4 is opened, and the residual oil enters the oil tank 5 through the third switch valve 4, so that recovery of the residual oil can be realized.

The above-mentioned residual oil recovery device 10 of this embodiment produces the negative pressure through throttling element 32 for the residual oil in the casing 20 is adsorbed to oil and gas separator 34, then separates the air of mixing in the residual oil through oil gas separation subassembly 2, in order to reach the recovery purpose of residual oil, and above-mentioned device can realize the high-efficient recovery of residual oil, and the cost is lower.

The utility model also provides a test system, including residual oil recovery unit 10, oil charge subassembly 30, oil circuit switching module 40 and testboard 50, wherein above-mentioned residual oil recovery unit 10 communicates in the casing 20 that awaits measuring the test piece, and this awaits measuring the test piece can be parts such as pump, motor, engine, gearbox. The oil filling assembly 30 is connected to the inlet 201 of the housing 20 of the test object, and is used for filling oil into the housing 20 of the test object. The oil path switching unit 40 is connected to the outlet 202 of the housing 20 of the test object, the oil tank 5, and the outside atmosphere. The test piece is placed on the test station 50 and tested by the relevant parts of the test station 50.

Illustratively, the oil fill assembly 30 includes an oil pump 301 in communication with the oil tank 5, and a first direction valve 302 in communication with the oil pump 301, the first direction valve 302 being capable of communicating with the inlet 201 of the housing 20 and the oil tank 5. When oil is filled, the oil tank 5 can be communicated with the inlet 201 of the housing 20 by switching the first switching valve 302, and the oil in the oil tank 5 can be filled into the housing 20 by the oil pump 301. When no oil is required, the first direction changing valve 302 is changed over again so that the oil tank 5 is disconnected from the inlet 201 of the housing 20.

In this embodiment, the oil path switching assembly 40 includes a three-way valve 401 and a pneumatic reversing valve 402, where the three-way valve 401 includes a first end, a second end and a third end, the first end is communicated with the outlet 202 of the housing 20, the second end is communicated with the oil tank 5, and the third end is communicated with the outside atmosphere. The pneumatic directional control valve 402 is connected to the three-way valve 401, and the pneumatic directional control valve 402 is connected to the high-pressure air source 6. The pneumatic reversing valve 402 is configured to communicate the first end with the second end when the oil fill assembly 30 is filled with oil, and when the oil fill assembly 30 is filled with oil into the housing 20, the oil flows into the oil tank 5 through the outlet 202, the first end, and the second end of the housing 20, and the oil fill is stopped. Further, a flow meter 403 may be provided between the second end and the tank 5, and the flow meter 403 may detect the oil flowing therethrough, and may determine that the oil filling is completed.

The pneumatic diverter valve 402 is also configured to communicate the first end with the third end upon activation of the vacuum generating assembly 3. Namely, when the residual oil is recovered, the shell 20 is communicated with the outside atmosphere, so that the residual oil can be adsorbed into the oil-gas separation assembly 2 by the vacuum generation assembly 3.

The test system of the present embodiment mainly has the following three stages when in use:

the first stage is as follows: namely, in the oil filling stage, at this time, the first switch valve 1 of the residual oil recovery device 10 is closed, the first direction valve 302 of the oil filling assembly 30 enables the oil tank 5 to be communicated with the inlet 201 of the housing 20 of the to-be-tested piece, meanwhile, the first end and the second end of the three-way valve 401 are communicated, oil is filled into the housing 20 through the oil pump 301, when the flow meter 403 of the oil path switching assembly 40 detects that oil passes through, it is indicated that the oil in the housing 20 is full, at this time, oil filling is stopped, and the oil filling stage is completed.

And a second stage: and a testing stage, in which the first reversing valve 302 switches the direction so as to disconnect the oil tank 5 from the inlet 201 of the housing 20 of the to-be-tested object, the first switch valve 1 is closed, the first end and the second end of the three-way valve 401 are still in a connected state, and the testing platform 50 tests the to-be-tested object. In the test process, the situation that the oil leaks out through the outlet 202 of the housing 20 may exist, and the leaked oil can flow into the oil tank 5 through the first end and the second end of the three-way valve 401, so that the waste of the oil is avoided.

And in the third stage, a residual oil recovery stage, in this stage, the first reversing valve 302 enables the oil tank 5 and the inlet 201 of the shell 20 of the to-be-tested piece to be still in a disconnected state, meanwhile, the first switch valve 1 is opened, the first end and the third end of the three-way valve 401 are communicated, the third switch valve 4 is closed, then, the second switch valve 33 is opened, compressed air is supplied into the throttling element 32 through the high-pressure air source 6, negative pressure is generated at the throttling element 32, the negative pressure enables residual oil in the shell 20 to flow into the oil-gas separation assembly 2 through the inlet 201 and the first switch valve 1, after the oil-gas separation assembly 2 performs oil-gas separation, the third switch valve 4 is opened, and the residual oil enters the oil tank 5 through the third switch valve 4, so that the residual oil recovery can be.

The above-mentioned test system of this embodiment can effectively realize treating the oil charge of test piece, test and the recovery of residual oil in the casing 20, and recovery efficiency is higher and the cost is lower.

It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.

Claims

1. A residual oil recovering device connected to a casing (20), said casing (20) comprising an inlet (201) and an outlet (202), characterized in that said residual oil recovering device comprises:

a first switch valve (1) communicated with the inlet (201);

the oil-gas separation assembly (2) is communicated with the first switch valve (1);

the vacuum generation assembly (3) comprises a vacuum generation pipeline (31), a throttling element (32) arranged on the vacuum generation pipeline (31), the throttling element (32) is communicated with the oil-gas separation assembly (2), and the throttling element (32) is configured to generate negative pressure so that residual oil in the shell (20) is adsorbed to the oil-gas separation assembly (2).

2. The residual oil recovering device according to claim 1, wherein the vacuum generating assembly (3) further comprises a second on-off valve (33) provided on the vacuum generating line (31) upstream of the throttling element (32).

3. Residual oil recovery device according to claim 2, characterized in that said vacuum generating assembly (3) further comprises a separator (34) arranged on said vacuum generating line (31) downstream of said throttling element (32).

4. Residual oil recovering device according to claim 3, characterized in that said vacuum generating assembly (3) further comprises a muffler (35) arranged on said vacuum generating line (31) downstream of said separator (34).

5. The residual oil recovering device according to any one of claims 1 to 4, wherein a filter (21) is provided in the oil-gas separation module (2).

6. The residual oil recovery device according to any one of claims 1 to 4, wherein the oil-gas separation module (2) is communicated with an oil tank (5), and a third switch valve (4) is further arranged between the oil-gas separation module (2) and the oil tank (5).

7. A test system, characterized in that it comprises a residual oil recovery device (10) according to any one of claims 1 to 6, said residual oil recovery device (10) being in communication with a housing (20) of a piece to be tested.

8. The testing system of claim 7, further comprising an oil fill assembly (30), the oil fill assembly (30) comprising an oil pump (301) in communication with an oil tank (5), a first directional valve (302) in communication with the oil pump (301), the first directional valve (302) being in communication with the inlet (201) of the housing (20) and the oil tank (5).

9. The test system according to claim 8, further comprising an oil path switching assembly (40), wherein the oil path switching assembly (40) comprises a three-way valve (401), a first end of the three-way valve (401) is communicated with the outlet (202) of the housing (20), a second end of the three-way valve (401) is communicated with the oil tank (5), and a third end of the three-way valve (401) is communicated with the outside atmosphere.

10. The testing system of claim 9, wherein the oil circuit switching assembly (40) further comprises a pneumatic directional valve (402), the pneumatic directional valve (402) being configured to communicate the first end with the second end when the oil charge assembly (30) is charged with oil, and to communicate the first end with the third end when the vacuum generating assembly (3) is activated.